Conjoined bearing with oil way system
By designing a joint bearing with an oil circuit system in high-speed bearings, using structures such as steel balls, dust covers, raised shafts and oil seals, the problems of limited liquid storage space and poor cooling effect are solved, and better lubrication is achieved Extended heat dissipation effect and service life.
Patent Information
- Application Number
- CN202421129145.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The liquid storage and over-oil structure design of existing high-speed bearings is poor, resulting in limited oil storage space and poor cooling effect.
Design a joint bearing with an oil circuit system, and form a "T" shape oil by setting two rows of steel balls, dust covers, raised shafts, long grooves, oil holes and oil seals between the outer ring and the inner ring. The oil passage is connected to the "8" shaped groove to ensure the stability and sealing of the oil passage system.
It improves oil storage space and cooling effect, extends service life, and improves lubricating and heat dissipation performance.
Smart Images
Figure CN222277239U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a high-speed bearing, which is a one-piece bearing with an oil circuit system. Background Art
[0002] Bearings are components that fix and reduce the load friction coefficient during mechanical transmission. When other parts move relative to each other on the shaft, they are used to reduce the friction coefficient during power transmission and keep the center position of the shaft fixed. According to the different friction properties of the moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Among them, some high-speed bearings are equipped with orifices and oil pipes for oil storage, lubrication and cooling; such as the application number 202322045746.1 disclosed in the Chinese patent literature, the authorization announcement date is 2024.01.23, and the utility model name is "A large megawatt gearbox output shaft bearing lubrication structure". However, the above-mentioned products and similar products have poor liquid storage and oil flow structure design, that is, the oil circuit system structure design is poor, resulting in limited oil storage space and poor cooling effect. Summary of the invention
[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a one-piece bearing with an oil circuit system in the art, so as to solve the technical problems of the existing similar products, such as the poor design of the liquid storage and oil flow structure, that is, the poor design of the oil circuit system structure, resulting in limited oil storage space and poor cooling effect. The purpose is achieved through the following technical solutions.
[0004] A one-piece bearing with an oil circuit system, wherein two rows of steel balls are respectively arranged at both ends between the inner diameter of the outer ring and the outer diameter of the inner ring of the one-piece bearing, dust covers are respectively arranged between the inner ring and the outer ring outside the steel balls, and protruding and integrally formed shaft rods are respectively arranged in the middle of the inner rings at both ends; the key points of its structural design are that a long groove is arranged on the outer diameter of one side of the outer ring, the second small oil hole at the long groove is aligned with the two first small oil holes that cross the center hole on both sides of the inner ring, the center hole in the inner ring is connected to the shaft rod at one end of the inner ring in a "T" shape, the two first small oil holes are arranged in the cylindrical groove at the outer diameter of the inner ring in the outer ring, the inner ring and the outer ring at both ends of the cylindrical groove are respectively provided with oil seals, the steel balls are respectively located between the oil seals and the dust covers at both ends, and the oil pipe is connected to the second oil hole of the outer ring. The above-mentioned one-piece bearing is a one-piece double-row steel ball bearing, which is designed with an internal oil circuit system to supply oil to the rotating parts of the connecting shaft through the shaft core under the premise of ensuring normal service life.
[0005] The two first small oil holes at the cylindrical groove of the inner ring are connected to the oil circuit through an "8"-shaped groove.
[0006] The openings of the two first small oil holes at the cylindrical groove of the inner ring are lower than the bottom of the cylindrical groove.
[0007] The end of the shaft rod at the other end of the inner ring is provided with a screw hole, so as to facilitate the installation and fixing of the other end of the shaft rod of the inner ring.
[0008] The cylindrical groove of the inner ring has an arc-shaped protrusion radially inward of the outer ring, and the height of the arc-shaped protrusion is lower than the height of the cylindrical groove of the inner ring. The above structure further ensures the stable fitting between the inner ring and the outer ring.
[0009] The outer diameter of the oil seal is respectively fixed in the inner hole groove of the outer ring, the inner diameter of the oil seal is inserted into the groove of the inner ring, and the inner diameter and outer diameter of the oil seal are fixed on one side of the hole groove of the outer ring and one side of the groove of the cylindrical groove of the inner ring in an up-down offset manner. The above structure is convenient for the assembly of the oil seal and the limiting of the oil seal, and is a specific embodiment of the oil seal structure.
[0010] The utility model has reasonable structural design, convenient production, use and installation, good stability, long service life and good lubrication and heat dissipation effect; it is suitable for use as a one-piece bearing with an oil circuit system, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.
[0012] Serial numbers and names of the accompanying drawings: 1. Inner ring, 101. Shaft, 102. Center hole, 103. Cylindrical groove, 104. First small oil hole, 105. Screw hole, 2. Outer ring, 201. Long groove, 202. Second small oil hole, 3. Oil seal, 4. Steel ball, 5. Dust cover. DETAILED DESCRIPTION
[0013] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1As shown, two rows of steel balls 4 are respectively arranged at both ends between the inner diameter of the outer ring 2 and the outer diameter of the inner ring 1 of the one-piece bearing, dust covers 5 are respectively arranged between the inner ring and the outer ring outside the steel balls, and protruding and integrally formed shafts 101 are respectively arranged in the middle of the inner rings at both ends. A long groove 201 is arranged on the outer diameter of one side of the outer ring, and the second small oil hole 202 at the long groove is aligned with the two first small oil holes 104 on both sides of the inner ring that cross the center hole 102, and the center hole in the inner ring is connected with the shaft 101 at one end of the inner ring in a "T" shape. The two first small oil holes are arranged in the cylindrical groove 103 at the outer diameter of the inner ring in the outer ring, and the inner ring and the outer ring at both ends of the cylindrical groove are respectively provided with oil seals 3, and the steel balls are respectively located between the oil seals and the dust covers at both ends, and the oil pipe is connected to the second oil hole of the outer ring. The two first small oil holes at the cylindrical groove of the inner ring are connected to the oil circuit through the "8"-shaped groove; at the same time, the orifices of the two first small oil holes at the cylindrical groove of the inner ring are lower than the bottom of the cylindrical groove. The end of the shaft at the other end of the inner ring is provided with a screw hole 105; the inner diameter of the outer ring is provided with an arc-shaped protrusion at the cylindrical groove of the inner ring, and the height of the arc-shaped protrusion is lower than the height of the cylindrical groove of the inner ring. The outer diameter of the oil seal is respectively fixed in the inner hole groove of the outer ring, and the inner diameter of the oil seal is inserted into the groove of the inner ring. The inner diameter and one side of the outer diameter of the oil seal are fixed on one side of the hole groove of the outer ring and one side of the groove at the cylindrical groove of the inner ring in an up-down offset manner.
[0014] The specific structure and assembly of the one-piece bearing are as follows: 1) A long groove is provided on the outer surface of the outer ring of the bearing to prevent oil from flowing out. A second small oil hole is provided in the long groove. The oil pipe is inserted into the second small oil hole and extends until it does not rub the surface of the inner ring; 2) A cylindrical groove is provided at a position where the outer diameter of the inner ring is aligned with the second small oil hole of the outer ring. Two first small oil holes are provided in the cylindrical groove to connect the oil path with an "8"-shaped groove, and the two first small oil holes cross the center hole; 3) Two rows of steel balls are provided between the inner ring and the outer ring, and an oil seal is provided on the inner side of each of the two rows of steel balls. The outer diameter of the oil seal is fixed in the inner hole groove of the outer ring, and the inner diameter of the oil seal is inserted into the groove of the inner ring. The "8"-shaped groove and a section of the first small oil hole in the cylindrical groove of the inner ring are sealed with two oil seals to prevent oil from flowing out; 4) A dust cover is provided on the outer side of each of the two rows of steel balls.
Claims
1. A one-piece bearing with an oil circuit system, wherein two rows of steel balls (4) are respectively arranged at both ends between the inner diameter of the outer ring (2) and the outer diameter of the inner ring (1), a dust cover (5) is respectively arranged between the inner ring and the outer ring outside the steel balls, and a protruding and integrally formed shaft (101) is respectively arranged in the middle of the inner ring at both ends; characterized in that The outer ring (2) is provided with a long groove (201) on one side of the outer diameter, and the second small oil hole (202) at the long groove is aligned with the two first small oil holes (104) on both sides of the inner ring (1) that cross the center hole (102). The center hole in the inner ring is connected to the shaft (101) at one end of the inner ring in a "T" shape. The two first small oil holes are arranged in a cylindrical groove (103) at the outer diameter of the inner ring in the outer ring. The inner ring and the outer ring at both ends of the cylindrical groove are respectively provided with oil seals (3), and the steel balls (4) are respectively located between the oil seals and the dust covers (5) at both ends. The oil pipe is connected to the second oil hole of the outer ring.
2. The one-piece bearing with oil system according to claim 1, characterized in that The two first small oil holes (104) at the cylindrical groove (103) of the inner ring (1) are connected to the oil circuit via an "8"-shaped groove.
3. The one-piece bearing with oil system according to claim 2, characterized in that The openings of the two first small oil holes (104) at the cylindrical groove (103) of the inner ring (1) are lower than the bottom of the cylindrical groove.
4. The one-piece bearing with oil system according to claim 1, characterized in that A screw hole (105) is provided at the end of the shaft rod (101) at the other end of the inner ring (1).
5. The one-piece bearing with oil system according to claim 1, characterized in that The cylindrical groove (103) of the inner ring (1) has an arc-shaped protrusion radially inwardly of the outer ring (2), and the height of the arc-shaped protrusion is lower than the height of the cylindrical groove of the inner ring.
6. The one-piece bearing with oil system according to claim 1, characterized in that The outer diameter of the oil seal (3) is respectively fixed in the inner hole groove of the outer ring (2), and the inner diameter of the oil seal is inserted into the groove of the inner ring (1). The inner diameter and one side of the outer diameter of the oil seal are fixed to one side of the hole groove of the outer ring and one side of the groove at the cylindrical groove (103) of the inner ring in an up-down offset manner.